amp7800N 2000 watt 4.1 ch motorcycle marine amplifier fm large lcd w/ waterproof case, 2 remotes (Chrome) 2000 watt 4.1 CH marine motorcycle amplifier with waterproof case Works with any RCA speakers. 2 remotes (wired / wireless) Clear FM reception. Large LCD display.SD slot, 3.5 aux input, built in Bluetooth External antenna jack waterproof antenna for crystal clear reception Protective Silicon waterproof case included